<template>
  <div class="my-product">
    <h3>标题: {{ title }}</h3>
    <p>价格: {{ price }}元</p>
    <p>{{ intro }}</p>
    <button @click="subFn">宝刀-砍1元</button>
  </div>
</template>

<script>
export default {
  props: ["index", "title", "price", "intro"],
  methods: {
    subFn() {
      this.$emit("subprice", this.index, 1); // 子向父
      eventBus.$emit("send", this.index, 1); // 跨组件
    },
  },
};
</script>

<style>
.my-product {
  width: 400px;
  padding: 20px;
  border: 2px solid #000;
  border-radius: 5px;
  margin: 10px;
}
</style>
